What is the severity of CVE-2021-31547?

CVE-2021-31547 is considered a medium severity vulnerability.

How do I fix CVE-2021-31547?

To fix CVE-2021-31547, upgrade MediaWiki to version 1.35.3 or later.

What kind of data is exposed by CVE-2021-31547?

CVE-2021-31547 exposes suppressed edits and usernames to unprivileged users.

Which versions of MediaWiki are affected by CVE-2021-31547?

CVE-2021-31547 affects MediaWiki versions up to and including 1.35.2.

Is there a workaround for CVE-2021-31547?

There is no official workaround for CVE-2021-31547; upgrading is the recommended solution.

Vulnerability/
CVE-2021-31547

medium

4.3

CWE

200

22/4/2021

3/8/2024

CVE-2021-31547: Infoleak

First published: Thu Apr 22 2021(Updated: )

An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. Its AbuseFilterCheckMatch API reveals suppressed edits and usernames to unprivileged users through the iteration of crafted AbuseFilter rules.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Wikimedia MediaWiki	<=1.35.2

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-31547?
CVE-2021-31547 is considered a medium severity vulnerability.
How do I fix CVE-2021-31547?
To fix CVE-2021-31547, upgrade MediaWiki to version 1.35.3 or later.
What kind of data is exposed by CVE-2021-31547?
CVE-2021-31547 exposes suppressed edits and usernames to unprivileged users.
Which versions of MediaWiki are affected by CVE-2021-31547?
CVE-2021-31547 affects MediaWiki versions up to and including 1.35.2.
Is there a workaround for CVE-2021-31547?
There is no official workaround for CVE-2021-31547; upgrading is the recommended solution.

agent/type
agent/references
agent/weakness
agent/severity
agent/author
agent/softwarecombine
agent/description
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/event
agent/first-publish-date
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/mediawiki
canonical/wikimedia mediawiki
version/wikimedia mediawiki/1.35.2

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Frequently Asked Questions

What is the severity of CVE-2021-31547?
CVE-2021-31547 is considered a medium severity vulnerability.
How do I fix CVE-2021-31547?
To fix CVE-2021-31547, upgrade MediaWiki to version 1.35.3 or later.
What kind of data is exposed by CVE-2021-31547?
CVE-2021-31547 exposes suppressed edits and usernames to unprivileged users.
Which versions of MediaWiki are affected by CVE-2021-31547?
CVE-2021-31547 affects MediaWiki versions up to and including 1.35.2.
Is there a workaround for CVE-2021-31547?
There is no official workaround for CVE-2021-31547; upgrading is the recommended solution.